Clinical Research Directory

Inclusion Criteria: * 1\. Pathologically confirmed colorectal adenocarcinoma, including hereditary colorectal cancer syndrome, such as Lynch syndrome and familial adenocarcinoma tumor polyposis, Peutz Jeghers syndrome, juvenile polyposis syndrome, and serrated polyposis syndrome; * 2\. Visit our center with complete medical records and pathological information; * 3\. Colorectal cancer patients diagnosed between 2013 and 2023. Exclusion Criteria: * 1\. The patient has other colorectal malignancies other than adenocarcinoma; * 2\. Malignant tumors adjacent to organs invading the colon and rectum; * 3\. Malignant tumors from distant organs metastasize to the colon and rectum; * 4\. Benign colorectal lesions; 5. Patients with recurrent colorectal cancer.